Vehicle with debris blower and lawn mower

ABSTRACT

A riding vehicle may include a blower assembly, a mower deck, and a power source. The blower assembly may be configured to direct air from an air inlet to at least one air outlet to move surface debris. The mower deck may be configured to cut a lawn formed of grass or other vegetation. The blower assembly may be configured to direct air to an interior space of the mower deck for assisted discharge of cuttings.

TECHNICAL FIELD

The present application relates generally to a vehicle adapted to blow debris and mow a lawn, and more particularly to a vehicle having a drive system configured to drive at least one of cutting blades for mowing and a blower blade for generating a stream of air.

BACKGROUND

Yard maintenance often involves the use of several different machines, including a conventional lawn mower vehicle to cut grass. In many cases, a separate blower vehicle is utilized to clear areas of debris such as straw, leaves or dirt. At a commercial level, lawn care services will often transport both a conventional riding lawn mower vehicle and a conventional riding blower vehicle to a job site to conduct yard maintenance for a customer. Due to the size of these vehicles and the transport trailer often used to haul them, lawn care services regularly transport only two vehicles: one lawn mower vehicle and one blower vehicle. There is little redundancy in this arrangement. If one of the blower vehicle or the lawn mower vehicle fails to operate correctly at the job site or requires maintenance, work at the job site can be left incomplete until proper functioning equipment becomes available. For instance, if the lawn mower vehicle fails to operate correctly, workers may leave the job site unfinished to initiate maintenance on the failed mower vehicle. Workers may then return to the job site at a later time after a properly functioning mower vehicle becomes available for use. It should be apparent that delays associated with such failures can increase operating costs and cause inconvenience to the customer.

SUMMARY OF THE DESCRIPTION

The present disclosure is directed to a riding vehicle having a blower assembly and a mower deck. In one embodiment, the riding vehicle may include a mower deck and a plurality of cutting blades disposed within a cutting space of the mower deck. The mower deck may include a discharge chute for expelling cuttings from the mower deck. The blower assembly may include an air inlet opening and an air outlet opening, and may be configured to generate a stream of air from the air inlet to the air outlet.

In another embodiment, the air outlet of the blower assembly may be separate from the discharge chute of the mower deck. The stream of air provided by the air outlet may enable movement of debris on a surface from a first location to a second location. The riding vehicle may include a power source operatively coupled to the cutting blades and the blower assembly such that the same power source provides power to the cutting blades and the blower assembly.

In yet another embodiment, the cutting blades of the mower deck are operatively coupled to a power source via a clutch, and wherein the power source includes a power takeoff directly coupled to the blower assembly and the clutch. In this way, the power source may simultaneously drive both the cutting blades and the blower assembly, or drive only the blower assembly.

In still another embodiment, the blower assembly is configured to generate a stream of air from the air inlet to the air outlet, and the air outlet is operably coupled to a mower deck inlet to direct the stream of air to a cutting space of the mower deck. In this way, the blower assembly may assist discharge of cuttings from the mower deck. In a further embodiment, at least three cutting blades of the mower deck include a right cutting blade, a middle cutting blade, and a left cutting blade arranged in a reverse delta configuration.

In still a further embodiment, a method of operating a riding vehicle for maintenance of a lawn includes the step of providing a power source with a power takeoff to supply power to at least one of an impeller of a blower assembly, cutting blades of a mower deck, and at least two traction wheels. The method may include driving, with the power takeoff, the impeller of the blower assembly to direct air from an air inlet to an air outlet nozzle, and directing the air output from the air outlet nozzle to a surface area to move debris from one location to another location. The method may also include driving, with the power takeoff, the cutting blades of the mower deck to cut areas of the lawn, and discharging cuttings generated by the cutting blades through a discharge chute of the mower deck, wherein the discharge chute is separate from the air outlet nozzle.

These and other advantages and features of the invention will be more fully understood and appreciated by reference to the description of the current embodiment and the drawings.

Before the embodiments of the invention are explained in detail, it is to be understood that the invention is not limited to the details of operation or to the details of construction and the arrangement of the components set forth in the following description or illustrated in the drawings. The invention may be implemented in various other embodiments and of being practiced or being carried out in alternative ways not expressly disclosed herein. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of “including” and “comprising” and variations thereof is meant to encompass the items listed thereafter and equivalents thereof as well as additional items and equivalents thereof. Further, enumeration may be used in the description of various embodiments. Unless otherwise expressly stated, the use of enumeration should not be construed as limiting the invention to any specific order or number of components. Nor should the use of enumeration be construed as excluding from the scope of the invention any additional steps or components that might be combined with or into the enumerated steps or components.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a riding vehicle according to one embodiment;

FIG. 2 is another perspective view of the riding vehicle;

FIG. 3 is an expanded perspective view of the riding vehicle depicted in FIG. 2;

FIG. 4 is an expanded perspective view of the riding vehicle depicted in FIG. 1;

FIG. 5 is a representative view of a mower deck for the riding vehicle according to one embodiment;

FIG. 6 is a side view of the riding vehicle;

FIG. 7 is a front view of the riding vehicle;

FIG. 8 is a side view of a riding vehicle according to one embodiment;

FIG. 9 is a top view of the riding vehicle of FIG. 1; and

FIG. 10 is a top view of a mower deck and blower construction according to one embodiment.

FIG. 11 is a sectional view of a cutting blade and blower construction according to one embodiment.

FIG. 12 is a top view of a mower deck with the cutting blade and blower construction of FIG. 11.

FIG. 13 is a sectional view of a cutting blade and a blower construction according to one embodiment.

FIG. 14 is a top view of a mower deck with the cutting blade and blower construction of FIG. 13.

DESCRIPTION

A riding vehicle according to one embodiment is shown and described in FIGS. 1-7, and generally designated 10. The riding vehicle may include a blower assembly 100, a mower deck 150, and a power source 12. The blower assembly 100 may be configured to direct air from an air inlet 110 to at least one air outlet. The mower deck 150 may be configured to cut a lawn formed of grass or other vegetation.

I. Overview of the Riding Vehicle

In addition to a blower assembly 100, a mower deck 150, and a power source 12, the riding vehicle 10 may include a frame 21 or primary chassis. The frame 21 may support one or more components of the riding vehicle 10, including, for example, the power source 12, the blower assembly 100 and the mower deck 150. The riding vehicle 10 may include at least two traction wheels 16 (e.g., a left wheel and a right wheel) further supported by the frame 21 and configured to drive the vehicle in a forward or reverse direction. In the illustrated embodiment, the riding vehicle 10 further includes at least two ground-contacting wheels 26 (e.g., one left wheel and one right wheel) that may stabilize the riding vehicle 10 or facilitate distributing the weight of the riding vehicle 10 over the ground in conjunction with the at least two traction wheels 16. For instance, the at least two traction wheels 16 and the at least two ground-contacting wheels 26 may be disposed respectively in one of four quadrants defined as rear-left, rear-right, forward-left, and forward-right quadrants with the center of mass of the riding vehicle 10 being the origin. In this arrangement, the at least two traction wheels 16 and the at least two ground-contacting wheels 26 may distribute the load or weight of the riding vehicle 10 over the ground, thereby stabilizing the riding vehicle 10. The at least two ground-contacting wheels 26 in one embodiment may be castor-type wheels that enable zero turning radius (ZTR) capability.

The at least two traction wheels 16 may be operably coupled to the power source 12 via a hydrostatic transmission (not shown), which in conjunction with the power source 12 define a drive system for the riding vehicle 10. The hydrostatic transmission may include two separate hydrostatic transaxles capable of independently driving the at least two traction wheels 16 in forward or reverse directions, and at varying speeds. It should be understood that any type of drive system may be utilized, including, for example, a single dual axle hydrostatic transaxle.

The frame 21 of the riding vehicle 10 may include a front suspension 18 configured to support the at least two ground-contacting wheels 26 near the front of the riding vehicle 10. The front suspension 18 may comprise a front frame element 22 fixedly coupled to the main body of the frame 21, and include forward control arms 24 that are movably coupled to the front frame element 22. Each end of the forward control arms 24 may support one of the at least two ground-contacting wheels 26. In the illustrated embodiment of FIG. 7, mounting between the forward control arms 24 and the front frame element 22 is facilitated by a joint 25 that enables the forward control arms 24 to rotate relative to the front frame element 22. The joint 25 may be disposed between left and right sides of the riding vehicle 10 such that the length of the forward control arms 24 is divided substantially evenly at the joint 25 between respective ground-contacting wheels 26. In this way, as the riding vehicle 10 approaches an uneven surface, the forward control arms 24 may tilt or rotate relative to the frame 21 to facilitate maintaining contact between the ground and at least two ground-contacting wheels 26.

The riding vehicle 10 may include a platform 20 (e.g., a riding platform) coupled to the frame 21, and arranged to enable an operator to stand while operating the riding vehicle 10. In the illustrated embodiment, the platform 20 is disposed near the rear of the riding vehicle 10. The platform 20 may be forward or aft of a rotational axis of rear-located traction wheels. It should be understood that the present disclosure is not limited to a platform 20 arranged to provide stand-up riding capabilities. For instance, the riding vehicle 10 may be a sit-down type vehicle such that the platform 20 is a seat for supporting the operator while operating the riding vehicle 10. The seat in such an embodiment may be disposed forward or aft of the power source 12 and/or the blower assembly 100.

In the illustrated embodiment, the riding vehicle 10 includes an operator control system 14 that provides one or more operator controls for the operator to direct operation of the riding vehicle 10. As an example, the operator control system 14 may include left and right levers that independently direct forward/reverse operation of respective left and right traction wheels 16. With such independent control over left and right traction wheels 16, the operator can drive the riding vehicle 10 forward, reverse, left and right. The operator control system 14 may further include an ignition switch that controls ignition of the riding vehicle 10 and enablement of an electrical system. The operator control system 14 may be configured to enable/disable operation of the at least two traction wheels 16 based on presence of the operator, and may engage/disengage a brake based on presence of the operator. An example of such a system is described in U.S. patent application Ser. No. 14/633,644, entitled VEHICLE CONTROL SYSTEM, and filed Feb. 27, 2015.

An alternative embodiment of a riding vehicle is shown in the illustrated embodiments of FIGS. 8-10 and generally designated 200. The riding vehicle 200 may be similar to the riding vehicle 10 with a few exceptions. For instance, the riding vehicle 200 in the illustrated embodiment includes a blower assembly 210, a mower deck 250, and a power source 212, similar to riding vehicle 10 described in conjunction with FIGS. 1-7. The blower assembly 210 may be configured to direct air from an air inlet 210 to at least one air outlet. The mower deck 250 may be configured to cut a lawn formed of grass or other vegetation. The riding vehicle may include a frame 221, similar to the frame 21, operable to support one or more components of the riding vehicle 200, including, for instance, the power source 212, the blower assembly 210, and the mower deck 250.

The riding vehicle 200 may include at least two traction wheels 216 (e.g., a left and right traction wheel, and similar to the traction wheels 16) supported by the frame 221 and configured to drive the vehicle in a forward or reverse direction. The traction wheels 216, in one embodiment, may be driven at different speeds and/or directions to facilitate steering the riding vehicle 200. The riding vehicle 200 may include at least two ground-contacting wheels 226 (e.g., a left and right ground contacting wheel, and similar to the ground contacting wheels 26). The at least two ground-contacting wheels 226 and the at least two traction wheels 216, in one embodiment, similar to the vehicle 10, may be operable to enable ZTR capability.

The at least two traction wheels 216 may be operably coupled to the power source 212 via a hydrostatic transmission (not shown), which in conjunction with the power source 212 define a drive system for the riding vehicle 200. This coupling between the power source 212 and the at least two traction wheels 216 may be similar to the coupling described in conjunction with the riding vehicle 10 with the power source 212 being mounted to a PTO 268 that is disposed vertically relative to the ground, and the hydrostatic transmission coupled to obtain power from the vertically positioned PTO 268. The power source 212 in the illustrated embodiment may be mounted to engage and drive the vertically positioned PTO 268.

The frame 221 of the riding vehicle 200 may include a front suspension 218 configured to support the at least two ground-contacting wheels 226 near the front of the riding vehicle 200. The front suspension 218 may be similar to the front suspension 18 described in conjunction with the illustrated embodiments of FIGS. 1-7.

Like the riding vehicle 10, the riding vehicle 200 may include a platform 220 (e.g., a riding platform) coupled to the frame 221, and arranged to allow the operator to stand while operating the riding vehicle 200. The platform 220 may be configured similar to the platform 20 described in conjunction with the riding vehicle 10, including a standup or sit-down type configuration.

The riding vehicle 200 may include an operator control system 214 that provides one or more operator controls to enable the operator to direct operation of the riding vehicle 200. The operator control system 214 may be similar to the operator control system 14. For instance, the operator control system 214 may include left and right levers that independently direct forward/reverse operation of respective left and right traction wheels 216. With such independent control over left and right traction wheels 216, the operator can drive the riding vehicle 200 forward, reverse, left and right. The operator control system 214 may further include an ignition switch that controls ignition of the riding vehicle 10 and enablement of an electrical system. The operator control system 214 may be configured to enable/disable operation of the at least two traction wheels 216 based on presence of the operator, and may engage/disengage a brake based on presence of the operator.

The riding vehicle 200, as described herein, may include a blower assembly 210 disposed in a horizontal configuration, with the PTO 268 for the blower assembly 210 being disposed vertically, and a rotational axis of the impeller 215 of the blower assembly 210 being vertical. The rotational axis of the impeller 215 of the blower assembly 210 may be substantially the same as the rotation axes of the cutting blades of the mower deck 250. Optionally, the blower assembly 210 may be operable to provide air to the mower deck 250 to facilitate discharge of clippings from the mower deck 250.

In an alternative embodiment, the riding vehicle 200 may include a plurality of blower assemblies. Examples of such configurations are depicted in the illustrated embodiments of FIGS. 11-14. The plurality of blower assemblies may be operable to generate an air stream that is separate from the mower deck for dispersing debris, or the plurality of blower assemblies may be operable to generate an air stream that is directed into the mower deck. Air directed into the mower deck may be utilized for facilitating discharge of cuttings from the cutting blades of the mower deck.

Additionally, or alternatively, the air directed into the mower deck may be utilized for facilitating dispersal of debris other than cuttings from the cutting blades of the mower deck. For instance, in one embodiment, the plurality of blower assemblies may be operated to generate an air stream into an internal space of the mower deck while the cutting blades are disengaged or not operating. This way, with the cutting blades not operating, the plurality of blower assemblies may be operable to generate an air stream that exits the discharge chute (e.g., a deck opening), potentially in a laminar manner, to facilitate movement of debris adjacent to the discharge chute (e.g., debris not under the mower deck). In another example, the plurality of blower assemblies may be operated, in conjunction with operating cutting blades, to both facilitate discharge of cuttings and debris adjacent to the discharge chute.

The plurality of blower assemblies, in one embodiment, may be coupled respectively to a drive assembly for each of the plurality of cutting blades. In one embodiment, the housing for each blower assembly may be disposed within the mower deck while stacked relative to the cutting blades. The air outlet for the blower assembly may also be within the mower deck. In another embodiment, the housing for each blower assembly may be disposed at least partially outside the mower deck with an air outlet in gaseous communication with the mower deck to direct the air stream thereto.

II. The Blower Assembly

The blower assembly 100 may include an impeller 112 configured to pump air (e.g., the ambient air surrounding the riding vehicle 10) from the air inlet 110 to the at least one air outlet. To avoid pulling in potentially destructive debris through the air inlet 110, the blower assembly 100 may include a shield 101 that enables inflow of air through the air inlet 110 but includes spaced apart material to limit entry of objects larger than the space between the material. The impeller may include any type of rotatable component capable of moving air, e.g., a squirrel-cage-type impeller or a fan-type blower.

In the illustrated embodiment, the at least one air outlet includes at least one nozzle configured to direct air toward a surface area to move debris from one location to another location. Additionally, or alternatively, the at least one air outlet may include an opening in gaseous communication with the mower deck 150 so that air pulled from the air inlet 110 may be directed to an internal space of the mower deck 150. The illustrated embodiment of FIGS. 1-7 depicts the at least one air outlet including three nozzles for moving surface debris corresponding to a right nozzle 102, a forward facing nozzle 106, and a left nozzle 108. The illustrated embodiment also depicts the at least one air outlet including a mower deck air supply outlet 122 configured to supply air to the mower deck 150. It should be understood that the present disclosure is not limited to this specific configuration, and that the at least one air outlet may include a subset of these features, including, for example, a single air outlet corresponding to a nozzle for moving surface debris or only the mower deck air supply outlet 122.

The blower assembly 100 in the illustrated embodiment may include at least one deflector plate or damper operably coupled to the operator control system 14. In the illustrated embodiment, each of the three nozzles 102, 106, 108 and the mower deck air supply outlet 122 is associated with a deflector plate that can selectively enable/disable air flow through the respective nozzle or air outlet. The deflector plate may be coupled to an actuator capable of moving the deflector plate to substantially block air flow through a respectively associated nozzle or air outlet. The actuator may include an electrically driven motor and an actuation member movable by the motor to transition the deflector plate between a blocking position and an open position. The operator control system 14 may be configured to control supply of power to the electrically driven motor to control whether the deflector plate is in the blocking position or the open position. In this way, the operator control system 14 may enable an operator to control air output from the three nozzles 102, 106, 108 and the mower deck air supply outlet 122. It should be understood that the not all air outlets of the blower assembly 100 may be associated with a controllable deflector plate. For instance, the mower deck air supply outlet 122 may not be associated with a controller deflector plate.

A blower assembly 210, in accordance with one embodiment, is shown in FIGS. 8-10. The blower assembly 210 may be similar to the blower assembly 100 but with several exceptions. For instance, the blower assembly 210 may be disposed with a rotational axis for an impeller being substantially vertical relative to the ground, whereas the blower assembly 100 in the illustrated embodiment is depicted with a rotational axis of the impeller 112 being horizontal or substantially parallel to the ground.

In the illustrated embodiments of FIGS. 8-10, the blower assembly 210 may include an impeller 215 operable to pump air from an air inlet 220 to at least one air outlet. Similar to the blower assembly 100, the blower assembly 210 may include a shield or guard disposed upstream of the air inlet 220 to substantially prevent debris or objects from entering the air inlet 220. For instance, the shield may substantially prevent access by a person to the impeller 215, or large debris from contacting the impeller 215 and causing damage to the impeller 215.

The at least one air outlet of the blower assembly 210 may be configured to direct air toward a surface area to move debris from one location to another location. Optionally, the at least one air outlet may be coupled to the mower deck 250 to provide air to an internal space of the mower deck 250, thereby facilitating discharge of clippings generated by the cutting blades.

In the illustrated embodiment of FIGS. 8-10, the at least one air outlet of the blower assembly 210 includes a right nozzle 202, a forward facing nozzle 206, and a left nozzle 208. As mentioned herein, the present disclosure is not limited to this construction, the at least one air outlet may include more or fewer openings, and may be provided in a different position or positions(s). As an example, the at least one air outlet may be provided to the mower deck 250, similar to the air supply outlet 122 described in conjunction with the riding vehicle 10.

The blower assembly 210 may include a damper or deflector assembly 270 operable to direct or control the flow of air through the blower assembly 210. In the illustrated embodiment, the deflector assembly includes first and second dampers 274, 276 that are rotatable as a complete unit about a pivot 272. In FIG. 9, relative to the page, air may directed to the right nozzle 202 by rotating the first and second dampers 274, 276 clockwise until the second damper 276 blocks the opening to the left nozzle 208 or until the second damper 276 is disposed where the first damper is located in FIG. 9. Rotation of the first and second dampers 274, 276 counterclockwise until the first damper 274 blocks the path to the right nozzle 202, or until the first damper 274 is disposed in the same position as the second damper 276 shown in FIG. 9. In other words, from a neutral position, shown in FIG. 9, with the first and second dampers 274, 276 shown closing both pathways to the left and right nozzles 202, 208, the first and second dampers 274, 276 may be rotated about the pivot 272 to a right open position and a left open position. The angle between the first and second dampers 274, 276, the length of the first and second dampers 274, 276, and the angle between the openings to the left and right nozzles 202, 208 may be constructed so that, in the neutral position, the first damper 274 blocks the pathway to the left nozzle 208 and the second damper blocks the pathway to the right nozzle 202. In the right open position, the second damper 276 blocks the pathway to the left nozzle 208. In the left open position, the first damper 274 blocks the pathway to the right nozzle 202. This way, a damper assembly 270 with two damper plates or dampers 274, 276 in a “V” configuration can be rotated between three states: neutral with first and second pathways closed, the first pathway open and the second pathway closed, and the second pathway open and the first pathway closed. The first damper that closes the first pathway can be rotated to close the second pathway while opening the first pathway, and the second damper that closes the second pathway can be rotated to close the first pathway while opening the second pathway.

In the illustrated embodiment, a third damper controlled separately from the damper assembly 270 may control the flow of air to the front nozzle 206. The damper assembly 270 may be disposed in the neutral position with both the left and right nozzles 202, 208 closed, and the third damper may be opened to direct air flow through the front nozzle 206.

The blower assembly 200, as discussed herein, in the illustrated embodiment of FIGS. 8-10 is arranged to receive power from a vertically disposed power takeoff 268. The housing for the impeller 215 may be arranged horizontally or parallel to the mower deck 250 with a rotational axis of the impeller 215 being substantially vertical. In one embodiment, the rotational axis of the impeller 215 may be non-horizontal or substantially non-normal (e.g., non-perpendicular) with respect to the rotational axis of the cutting blades of the mower deck 250. In this way, being substantially non-normal with respect to the rotational axis of the cutting blades of the mower deck 250 may include the rotational axes of the cutting blades and the impeller being substantially parallel to each other.

In one embodiment, the blower assembly 210 may be configured such that the rotational axis of the impeller 215 is aligned with the rotational axis of the cutting blades 280, 282, 284 of the mower deck 250. The housing of the blower assembly 210 may be arranged in a stacked relationship relative to the mower deck 250 so that the power source 212 can be disposed above blower assembly 210 and the mower deck 250. As an example, the blower assembly 210 may be disposed between the power source 212 (e.g., an engine) and the mower deck 250.

In the illustrated embodiment of FIG. 8, the power takeoff 268 may be disposed vertically to drive the impeller 215 about the longitudinal axis of the power takeoff 268 or the rotational axis of the power takeoff 268. A drive belt may be coupled to the power takeoff 268 and a clutch 264 (e.g., an electronic clutch) operable to selectively transfer power to a drive shaft 260 to facilitate rotation of the cutting blades 280, 282, 284. The drive shaft 260 may be operably coupled by a belt system to a pulley 281, 283, 285 associated respectively with each of the cutting blades 280, 282, 284. Selective rotation of the drive shaft 260 via engagement of the clutch 264 may enable rotation of the cutting blades 280, 282, 284 of the mower deck 250. Alternatively, the power takeoff 268 may be coupled to the cutting blades 280, 282, 284 such that rotation of the power takeoff 268 necessarily results in rotation of the cutting blades 280, 282, 284.

In one embodiment, the impeller 215 may be selectively coupled to receive power from the power takeoff 268 such that the impeller 215 may be selectively operated. The selective coupling between the power takeoff 268 and the impeller 215 may be provided by a clutch (e.g., an electronic clutch). This way, the operator of the riding vehicle 200 may selectively operate the impeller 215 separate from the cutting blades 280, 282, 284, which may or may not be selectively coupled to the power takeoff 268. For instance, the cutting blades 280, 282, 284 may be selectively coupled to the power takeoff 268 or mandatorily coupled to or non-selectively coupled to the power takeoff 268.

A system in accordance with one embodiment is shown in FIGS. 11-12, including a plurality of blower assemblies 300. The blower assembly 300 in the illustrated embodiment may be coupled to a drive assembly 383 for the cutting blade 380. In one embodiment, the drive assembly 383 may be operable to selectively engage one or both of an impeller 315 of the blower assembly 300 and the cutting blade 380. For instance, the drive assembly 383 may include an electronic clutch configured to selectively transfer power from a power takeoff of the power source 212 to one or both of the impeller 315 and the cutting blade 380. Alternatively, the drive assembly 383 may be constructed to drive both the impeller 315 and the cutting blade 380 without selective engagement (e.g., the impeller 315 and the cutting blade 380 may be keyed in a fixed relationship to each other about a shaft of the drive assembly 383.

In the illustrated embodiment, the drive assembly 383 includes a drive shaft assembly 390 and a coupler 391 operable to couple the cutting blade 380 and the impeller 315 to the drive shaft assembly 390 to facilitate transfer of power from the power source 212 to the cutting blade 380 and the impeller 315. The rotational axis of the cutting blade 380 and the impeller 315 in the illustrated embodiment are shown to be substantially aligned. It is noted that the power takeoff 268 of the power source 212 may be positioned relative to the rotational axis of the cutting blade 380 or the impeller 315, or both, in a variety of ways as discussed herein, including in a non-normal or normal positional relationship.

The blower assembly 300 in the illustrated embodiment is provided with a housing 316 disposed within an internal space 393 of the mower deck 350, including an air outlet 322 that provides an air stream to the internal space of the mower deck 350. A rear wall 351 of the mower deck 350 can be seen in the illustrated embodiments.

Although the blower assembly 300 and its housing 316 are disposed within the internal space 393 of the mower deck 350, the mower deck 350 or the housing 316, or both, may define an air inlet 310 for the blower assembly 300. The air inlet 310 in the illustrated embodiment is provided in the form of a plurality of openings in the mower deck 350 that allow air into the housing 316 while substantially preventing access to the impeller 315 to unintended objects (e.g., large debris).

A system in accordance with one embodiment is shown in FIGS. 13-14, including a plurality of blower assemblies 400. The blower assemblies 400 are similar in many respects to the blower assemblies 300, with several exceptions including a housing 416 of the blower assembly 400 being provided at least partially outside an internal space 483 of a mower deck 450.

The mower deck 450 and blower assembly 400 in the illustrated embodiment are similar to the mower deck 350 and blower assembly 300, including a drive assembly 483, a drive shaft 490, and a coupler 491. The impeller 415 and a majority of the housing 416 of the blower assembly 400 are disposed outside of the internal space 493 of the mower deck 450 with an air outlet 422 being provided within the internal space 493, thereby directing air across the cutting blade 480.

The blower assemblies 400 may include an air inlet 410 similar to the air inlet 310, including, for example, a plurality of openings sized to allow sufficient air flow.

III. The Mower Deck

The mower deck 150 may include a plurality of cutting blades 180, 182, 184 configured to cut a lawn, which, as mentioned herein, may include grass or other vegetation. In the illustrated embodiment of FIG. 5, the cutting blades include a right cutting blade 180, a center cutting blade 182, and a left cutting blade 184, relative to a cutting direction of the mower deck 150. For instance, the mower deck 150 may be coupled to a frame 21 of the riding vehicle 10 such that a forward direction of the riding vehicle 10 corresponds to the cutting direction of the mower deck 150. The height of the mower deck relative to the ground may be controlled by control arms 30, 32 coupled to the mower deck 150 and under control of actuators (not shown) that can be operated by the operator control system 14.

It is noted that the cutting action of each cutting blade includes at least two types of cuts: a coarse cut and a finish cut. The forward cutting space of each cutting blade 180, 182, 184, or the position of the cutting blade that makes the first cut as the mower deck 150 travels in the cutting direction, may perform the coarse cut. This first cut or coarse cut may occur after grass blades of the lawn have just cleared a front edge 151 of the mower deck 150, which may push down the grass blades as they travel under the front edge 151. Because the grass blades may not be completely upright at this stage, the cutting blade may cut the grass blades above a desired cut height. As the mower deck 150 continues to travel in the cutting direction, the grass blades enter the rear cutting space of each cutting blade 180, 182, 184. In this rear cutting space, the cutting blade may perform the finish cut. The rear cutting space may be proximate the position of the blade as it travels near the rear edge 153 of the mower deck 150 (or a possible baffle). It should be understood that not all blades of grass that encounter the mower deck 150 enter the forward cutting space and the rear cutting space for the same duration. For example, for a given vehicle speed, blades of grass positioned left or right of a rotational axis of the cutting blades (relative to the cutting direction) may enter the forward and rear cutting spaces for a length of time that is shorter than that associated with blades of grass positioned closer to the rotational axis. In an attempt to offset the effects of this difference in time, the front edge 151 of the mower deck 150 may be spaced from the cutting blades to enable blades of grass positioned farther away from the rotational axis additional time to return to an upright position. This additional time may enable the length of the coarse cut to be closer to or in fact the same as a finish cut.

The rear cutting space of the plurality of cutting blades 180, 182, 184 and the rear edge 153 of the mower deck 150 may be arranged to be in closer proximity to each other than the proximity between the front edge 151 and the forward cutting space. In the illustrated embodiment, the rear edge 153 of the mower deck 150 (or baffle) is spaced substantially evenly from the rear cutting space of the respective cutting blades 180, 182, 184. This spacing may be between ⅛ inch and 2 inches, or between ⅛ inch and ½ inch, or approximately 5/16 inch. In maintaining proximity between the rear edge 153 and the rear cutting space, a vacuum may be generated in the rear cutting space that facilitates positioning blades of grass in an upright position for the finish cut.

In the illustrated embodiment of FIG. 5, the plurality of cutting blades 180, 182, 184 are arranged in a reverse delta configuration in which a right blade 180 and a left blade 184 are disposed forward of a middle blade 182 in a ‘V’ arrangement with respect to the cutting direction of the mower deck 150. In this configuration, the rear cutting spaces of the middle blade 182, the right blade 180, and the left blade 184 can be disposed approximately the same distance from the rear edge 153 of the mower deck 150. As discussed herein, close proximity with respect to the rear cutting space and the rear edge 153 may facilitate generation of a vacuum in the rear cutting space for the finish cut. Although the plurality of cutting blades 180, 182, 184 are disposed in a reverse delta configuration in the illustrated embodiment, it should be understood that the present disclosure is not so limited. For instance, the plurality of cutting blades 180, 182, 184 may be arranged in a delta configuration (e.g., in a ‘A’ arrangement) in which the middle blade is forward of the right blade 180 and the left blade 184 with respect to the cutting direction of the mower deck 150. It is noted that in the delta configuration, the distance between the rear cutting space of the middle cutting blade 182 and the rear edge 153 may be greater than the distance between the rear cutting spaces of the left and right cutting blades 180, 184 and the rear edge 153. This difference in spacing may yield less vacuum in rear cutting space of the middle blade 182 in the delta configuration, and for this reason, the cutting action of the reverse delta configuration may in some cases be cleaner than the delta configuration. For this reason, in some cases, one or more baffles may be incorporated into the cutting space. In other words, the reverse delta arrangement may produce a better finish cut than the delta arrangement.

Another example arrangement of the plurality of cutting blades 180, 182, 184 includes a straight configuration (e.g., in a ‘-’ arrangement) where rotational axes of the plurality of cutting blades are 180, 182, 184 substantially even with each other relative to the cutting direction. It should further be understood that a mower deck 150 according to one embodiment of the present disclosure may include a single cutting blade.

The mower deck 150 may also include a discharge chute 152 through which cuttings generated by the cutting blades 180, 182, 184 can be expelled from the mower deck 150. In one embodiment, the at least one air outlet 102, 106, 108 is separate from the discharge chute 152 such that air output from the at least one air outlet 102, 106, 108 is separate from the cuttings expelled through the discharge chute 152. The mower deck 150 includes an internal space 154 defined by a deck housing 156 within which the cutting blades 180, 182, 184 spin when driven. The deck housing 156 is open along a surface of the lawn, and may further define the discharge chute 152 through which cuttings may be expelled from the internal space 154. In one embodiment, the discharge chute 152 may include a chute blocker (not shown) that may be selectively engaged/disengaged by an operator (via an operator control system 14 of the riding vehicle 10) to respectively enable or substantially prevent cuttings from being expelled through the discharge chute 152. As an example, if an operator determines he is closing in on area on which he does not desire to throw cuttings, the operator may engage the chute blocker to prevent expulsion of the cuttings in that area. After the operator has maneuvered the riding vehicle 10 past the area of concern, the operator may disengage the chute blocker to enable expulsion of the cuttings from the internal space 154 of the mower deck 150.

In the illustrated embodiment, the mower deck 150 includes a mower deck air inlet 170 in gaseous communication with the mower deck air supply outlet 122 of the blower assembly 100. The mower deck air inlet 170 may enable the blower assembly 100 to direct air through the internal space 154 of the mower deck 150, potentially aiding in expulsion of cuttings therefrom. For instance, by directing air into the internal space 154 of the mower deck 150, the blower assembly 100 may increase air flow through the internal space 154 to the discharge chute 152, thereby enhancing the discharge rate of cuttings from the mower deck 150. Enhanced discharge of cuttings from the mower deck 150 may prevent excess cuttings from impeding the cutting action of the cutting blades 180, 182, 184. This may enable the mower deck to provide a cleaner or more uniform cut to the lawn over conventional mower decks. Although the mower deck 150 is depicted with a single mower deck air inlet 170 located proximal between the cutting spaces of the middle and left cutting blades 182, 184, it should be understood that the mower deck 150 may include a plurality of mower deck air inlets, and that the one or more mower deck air inlets 170 may be disposed at any position of the mower deck 150.

As discussed herein, the reverse delta arrangement of the plurality of cutting blades 180, 182, 184 may facilitate generation of a greater vacuum in the rear cutting space of the middle cutting blade 182 relative to a delta arrangement. In the illustrated embodiment of FIG. 5, it is noted that the forward cutting spaces of the plurality of cutting blades 180, 182, 184 provide the primary force in expelling cuttings through the discharge chute 152. As can be seen in the illustrated embodiment of FIG. 5, the discharge chute 152 is positioned in the discharge path of cuttings generated by the plurality of cutting blades 180, 182, 184 spinning in a clockwise direction.

It has been shown that, in some cases, the reverse delta configuration of the plurality of cutting blades 180, 182, 184 can suffer in discharging cuttings generated from the middle cutting blade 182. Because the rotational axis of the middle cutting blade 182 is rear of the rotational axis of the left cutting blade 184, portions of the two cutting blades, in motion, in an area in proximal to each other are moving in different directions. For example, in the illustrated embodiment of FIG. 5, portions of these two cutting blades 182, 184 proximal to the mower deck air inlet 170 are moving in opposite directions. As a result, the discharge action of the middle cutting blade 182 in this area can be counteracted by motion of the left cutting blade 184. The reverse delta configuration according to one embodiment can yield a cleaner cut of the grass due to the position of the middle cutting blade 182, but can be susceptible to accumulation of cuttings near the middle cutting blade 182. It should be understood that not all reverse delta configurations may experience accumulation of cuttings in this manner.

As discussed herein, a mower deck in accordance with one embodiment is shown in FIGS. 8-10, and generally designated 250. The mower deck 250 may be similar to the mower deck 150 described herein, including a plurality of cutting blades 280, 282, 284 configured to cut vegetation. In the illustrated embodiment of FIG. 10, the cutting blades include a right cutting blade 280, a center cutting blade 282, and a left cutting blade 284, relative to the cutting direction of the mower deck 250. The mower deck 250 may be coupled to the frame 221, similar to the mower deck 150 with the exception of the mower deck 250 being operable to receive power from a power takeoff 268 disposed with a vertical rotational axis.

In the illustrated embodiment of FIG. 12, the mower deck 350 and the plurality of blower assemblies 300, as discussed herein, are shown in further detail. The mower deck 350 may include a plurality of blower assemblies 300, each respectively provided in conjunction with one of the plurality of cutting blades 380, 382, 384. In the illustrated embodiment, looking down on the page, the cutting blades 380, 382, 384 rotate in clockwise direction with the cutting direction of the mower deck 350 being from left to right. The air outlet 322 is disposed in this configuration to direct an air stream across the leading cutting area of each cutting blade 380, 382, 384 and toward the discharge chute 352. With this configuration, air from the blower assemblies 300 may be directed across each of the cutting blades 380, 382, 384 to assist in discharge of cuttings.

It is noted, as discussed herein, the cutting blades 380, 382, 384 and the blower assemblies 300 may be operated separate from each other in one embodiment. For instance, the cutting blades 380, 382, 384 may be disengaged, such that no cutting is performed by the mower deck 350, and such that air is generated from the blower assemblies 300 and directed to the discharge chute 352 to provide air flow for dispersal of debris in proximity to the discharge chute 352. Alternatively, or additionally, the discharge chute 352 may be closed so that air from the blower assemblies 300 may be directed to other areas of the riding vehicle 200, including forward of the riding vehicle 200 or a side opposite the discharge chute 352.

In the illustrated embodiment of FIG. 14, the mower deck 450 and the plurality of blower assemblies 400, as discussed herein, are shown in further detail. The mower deck 450 may include a plurality of blower assemblies 300, similar to the mower deck 350. As an example, the mower deck 450 may include a plurality of cutting blades 480, 482, 484, each provided in conjunction with a blower assembly 400. And, similar to the mower deck 350, the blower assemblies 400 may operate alone or in conjunction with the cutting blades 480, 482, 484 to facilitate moving debris, including debris adjacent to the discharge chute 452 or cuttings from the cutting blades 480, 482, 484, or both.

Similar to the mower deck 450, the air outlets 422 may be disposed to direct air across the leading cutting direction of each cutting blade 480, 482, 484 and toward the discharge chute 452, thereby assisting in discharge of cuttings.

IV. Power Source Coupling to the Blower Assembly or the Mower Deck, or Both

The power source 12 of the riding vehicle 10 may be configured to transfer power to a power take-off 168 (PTO) that may be operably coupled to one or more components of the riding vehicle 10, including, for example, at least one of the impeller 112 of the blower assembly 100 and the cutting blades 180, 182, 184 of the mower deck 150. In the illustrated embodiment, the PTO 168 may drive the impeller 112 and the cutting blades 180, 182, 184 in a simultaneous manner. The PTO 168 may be selectively coupled to the impeller 112 or the cutting blades 180, 182, 184, or a combination thereof.

As an example, in the illustrated embodiment of FIG. 7, a clutch 166 is disposed on an end of the PTO 168 distal from the power source 12, and the impeller 112 may be coupled to the PTO 168 between the power source 12 and the clutch 166 via a spline coupling. The clutch 166 may be coupled to a drive belt that drives a gearbox 164 that in turn drives a belt coupled to pulleys (e.g., pulleys 162, 160 in FIG. 6) attached to a drive shaft of each cutting blade 180, 182, 184. The gearbox 164 in the illustrated embodiment is mounted to the mower deck 150. In this configuration, with the clutch 166 engaged, the gearbox 164 provides power to the plurality of cutting blades 180, 182, 184 so that the plurality of cutting blades 180, 182, 184 spin clockwise. The clutch 166 in the illustrated embodiment may be an electronic clutch capable of being selectively engaged/disengaged to drive the gearbox 164 and in turn the plurality of cutting blades 180, 182, 184. In this way, the PTO 168 may simultaneously drive both the impeller 112 and the plurality of cutting blades 180, 182, 184. It should be understood that simultaneous and/or selective supply of power to the impeller 112 and the plurality of cutting blades 180, 182, 184, or a combination thereof, may be achieved in a different way and that the present disclosure is not limited to the construction of the illustrated embodiment. For instance, the gearbox 164 may include a clutch component, and the clutch 166 may be replaced with pulleys. Selective engagement of the clutch component of the gearbox may enable supply of power to the cutting blades 180, 182, 184.

Because the height of the mower deck 150 may be raised and lowered relative to the ground by the operator (to facilitate operator selection of cut height for the lawn), the distance between the clutch 166 and the gearbox 164 may be variable. A take-up pulley (not shown) may be arranged to take up any slack in the belt that couples the clutch 166 to the gearbox 164.

In the illustrated embodiment of FIG. 7, the PTO 168 is arranged horizontally. However, the present disclosure is not limited to this arrangement—the PTO 168 may be configured differently, such as being vertical or tilted between horizontal and vertical. An example of such a vertical arrangement of the PTO is shown in the illustrated embodiment of FIGS. 8-10.

The power source 12 may be any type of power source configured to rotate the PTO 168. For instance, the power source 12 may be a combustion engine, such as a 20 horsepower combustion engine that uses gasoline or natural gas as a fuel. Alternatively, the power source 12 may be an electric motor.

A power source 212 in accordance with one embodiment is shown in FIGS. 8-10. The power source 212 may be similar to the power source 12. In the illustrated embodiment, as discussed herein, the PTO 268 may be coupled to the power source 212 with the rotational axis of the PTO 268 being vertical. With this configuration, the power source 212 may be disposed above, potentially directly above, the blower assembly 210 and the mower deck 250. In other words, in one configuration, the position of the blower assembly 210 may be disposed beneath the power source 212 rather than in a side-by-side relationship relative to the ground, potentially providing additional horizontal space on the frame 221 to provide additional horizontal space for a rider and/or operational controls of the riding vehicle 200, without significantly raising the center of gravity of the riding vehicle 200. For instance, in one embodiment, a seat may be provided for the operator instead of a stand-up platform, with the seat positioned farther forward than the platform 220 shown in the illustrated embodiment of FIG. 8.

It is noted that the present disclosure is not limited to the blower assembly 210 being below or directly below the power source 212, or sandwiched between the mower deck 250 and the power source 212. The blower assembly 210 may be disposed with a rotational axis of the impeller 215 being vertical, and the power source 212 may be disposed anywhere on the riding vehicle 200, including, for example, with the PTO 268 being horizontal. As another example, the power source 212 may be disposed within a plane defined by rotation of the impeller 215 (e.g., a plane which is defined by rotation of the impeller 215 and which is normal or perpendicular to the rotational axis of the impeller 215). More specifically, in one configuration of this example, the power source 212 may be disposed rearward of the blower assembly 210, or forward of the blower assembly 210, enabling the power source 212 to be disposed with its center of gravity closer to the ground than depicted in FIG. 8.

V. Assisted Discharge of Cuttings from the Mower Deck

In the illustrated embodiment of FIGS. 1-10, and as described herein, the riding vehicle 10, 200 may be configured to supply air to the mower deck 150, 250 to assist discharge of cuttings from the plurality of cutting blades 180, 182, 184, 280, 282, 284. In the illustrated embodiments of FIGS. 1-7, the mower deck air supply outlet 122 of the blower assembly 100 may be in gaseous communication with the mower deck air inlet 170 of the mower deck 150. In the illustrated embodiment of FIGS. 8-10, the at least one air outlet of the blower assembly 210 may be in gaseous communication with the mower deck 250. In the illustrated embodiment of FIGS. 11-14, the at least one air outlet of the plurality of blower assemblies 300 may be in gaseous communication with the mower deck 350, 450.

Although described in connection with a single gaseous coupling between the blower assembly 100, 210 and the mower deck 150, 250, it should be understood that there may be one or more air outputs of the blower assembly 100, 210 that are coupled to one or more air inputs of the mower deck 150, 250, including couplings between one output and many inputs, and couplings between many outputs and one input.

In the illustrated embodiment of FIGS. 1-7, a conduit 171 provides the coupling between the mower deck air supply outlet 122 and the mower deck air inlet 170. The conduit 171 may be semi-rigid hose configured to join with respective collars disposed on the mower deck air supply outlet 122 and the mower deck air inlet 170. Sizing of the conduit 171, the mower deck air supply outlet 122 and the mower deck air inlet 170 may vary from application to application, depending on a flow rate determined to facilitate enhanced discharge of cuttings from the mower deck 150. In one embodiment, the diameter of the conduit 171 may be between 2 and 5 inches, or between 2 and 3 inches.

In the illustrated embodiment, the degree of air flow sufficient to move surface debris in a meaningful way may be less than the degree of air flow sufficient to facilitate enhanced discharge of cuttings from the mower deck 150. As a result, the determined flow rate of air via the conduit 171 to the mower deck 150 may be less than the flow rate of air through at least one of the nozzles 102, 106, 108 of the blower assembly 100 with an associated deflector plate in the open position. For instance, the size of the nozzle opening may be larger than the size of the conduit 171. More specifically, in one embodiment, a cross sectional area of the nozzle opening may be between 7 to 20 times the cross sectional area of the conduit. In this way, the air flow through the nozzle may be substantially larger than the air flow through the conduit 171.

It is further noted that, with the deflector plate for each respective nozzle 102, 106, 108 in the closed position such that the blower assembly 100 is configured to supply air substantially only to the mower deck 150, the load on the impeller 112 is less than when at least one of the deflector plates is in the open position. This may be due at least in part to the decreased flow rate through the conduit 171 as compared to when one or more of the nozzles 102, 106, 108 are fully operational or the associated deflector plates are in the open positon. In other words, when the blower assembly 100 is operating only in a discharge assist mode (with air flowing to the mower deck 150), the load on the impeller 112 may be less than when the blower assembly 100 is operating in a debris blower mode (with one or more of the nozzle deflectors open), alone or in conjunction with the discharge assist mode.

The decreased load on the impeller 112 when operating only in the discharge assist mode may result in a reduction in loading on the power source 12. This reduction in loading may be offset by an increase in loading caused by engagement of the clutch 166 to drive the plurality of cutting blades 180, 182, 184. In this way, the maximum load on the power source 12 may occur during operation of the blower assembly 100 in both the discharge assist mode and the debris blower mode, and with the clutch 166 engaged.

In one embodiment, the operator control system 14 may be configured to allow engagement of the clutch 166 to drive the plurality of cutting blades 180, 182, 184 if the blower assembly 100 is configured only in the discharge assist mode (such that the nozzle deflectors are closed). This way, the maximum loading on the power source 12 may be less than if the clutch 166 were engaged and the blower assembly 100 were operating in both the debris blower mode and the discharge assist mode. In one embodiment, the operator control system 14 may include a clutch lockout circuit and/or mechanism that prevents engagement of the clutch 166 if the blower assembly 100 is operating to supply air out of one or more of the nozzles 102, 106, 108. By limiting operation of cutting blades 180, 182, 184 while operating the blower assembly 100 only in the discharge assist mode, the power rating of the power source 12 fitted on the riding vehicle 10 may be reduced relative to operation without this limitation (e.g., a 25%-50% reduction, or from a 25 horsepower motor to a 15 horsepower motor). The reduction in motor size can yield substantial savings in cost, weight, and fuel economy.

The blower assembly 210 may be configured to supply air to the mower deck 250, similar to embodiments described herein in conjunction with the blower assembly 100 supplying air to the mower deck 150.

In the illustrated embodiment of FIGS. 5 and 9-14, as discussed herein, the reverse delta configuration of the plurality of cutting blades 180, 182, 184, 280, 282, 284, 380, 382, 384, 480, 482, 484 may experience accumulation of cuttings in the area proximal to the mower deck air inlet 170. With the blower assembly 100, 210, 300, 400 operating in the discharge assist mode, air may be directed to this area via the mower deck air inlet 170. This supply of air from the blower assembly to areas of the mower deck 150, 250, 350, 450 in which cuttings potentially accumulate may substantially avoid such accumulation. In the context of the reverse delta configuration, prevention of accumulation of cuttings by supply of air from the blower assembly 100, 210, 300, 400 may enable the reverse delta configuration to provide a cleaner cut than the delta configuration without the drawbacks of potential accumulation of cuttings. As can be seen in the illustrated embodiment of FIG. 5, air flow from the mower deck air inlet 170 may be directed across the forward cutting space of the middle cutting blade 182 to facilitate enhanced discharge of cuttings from this space. It should be understood that air from the blower assembly 100, 210, 300, 400 may be directed to different and/or additional areas of the internal space 154 of the mower deck 150, 250, 350, 450 to facilitate assisted discharge of cuttings. For instance, the mower deck air inlet 170 may be positioned in the deck housing 156 at the left side (relative to the cutting direction) and proximal to the forward cutting space of the left blade 184, 284. In this way, air may be directed across the forward cutting space of the cutting blades 180, 182, 184, 280, 282, 284, 380, 382, 384, 480, 482, 484. It should further be noted that the mower deck air inlet 170 may be coupled to air channels within the internal space 154 of the mower deck 150, 250, 350, 450 to direct air in one or more particular directions within the internal space. Such air channels may form an air manifold or an air knife that may increase or decrease velocity of the air through the channel.

In one embodiment, the internal space 154 may include one or more flow control baffles to control and direct air flow within the internal space 154. In one embodiment, the one or more baffles may be disposed in close proximity to the cutting blades 180, 182, 184, 280, 282, 284, 380, 382, 384, 480, 482, 484 to facilitate generation of a vacuum in the rear cutting space, and to facilitate directing cuttings through the internal space 154. As an example, one or more baffles may define internal chambers associated with each of the cutting blades 180, 182, 184, 280, 282, 284, 380, 382, 384, 480, 482, 484 with one or more ports that enables discharge of cuttings from one chamber to the next, ultimately to the discharge chute 152, 252, 352, 452.

In an alternative embodiment, the riding vehicle 10 may include components in addition to or alternative to the plurality of cutting blades 180, 182, 184, 280, 282, 284, 380, 382, 384, 480, 482, 484 that are powered by the power source 12, 212. For instance, the riding vehicle 10, 200 may include an edger powered simultaneously with the blower assembly 100, 210, 300, 400 by the power source 12, 212 simultaneously. The blower assembly 100, 210, 300, 400 may move debris generated by the edger, and without use of multiple power sources.

Directional terms, such as “vertical,” “horizontal,” “top,” “bottom,” “upper,” “lower,” “inner,” “inwardly,” “outer” and “outwardly,” are used to assist in describing the invention based on the orientation of the embodiments shown in the illustrations. The use of directional terms should not be interpreted to limit the invention to any specific orientation(s).

The above description is that of current embodiments of the invention. Various alterations and changes can be made without departing from the spirit and broader aspects of the invention as defined in the appended claims, which are to be interpreted in accordance with the principles of patent law including the doctrine of equivalents. This disclosure is presented for illustrative purposes and should not be interpreted as an exhaustive description of all embodiments of the invention or to limit the scope of the claims to the specific elements illustrated or described in connection with these embodiments. For example, and without limitation, any individual element(s) of the described invention may be replaced by alternative elements that provide substantially similar functionality or otherwise provide adequate operation. This includes, for example, presently known alternative elements, such as those that might be currently known to one skilled in the art, and alternative elements that may be developed in the future, such as those that one skilled in the art might, upon development, recognize as an alternative. Further, the disclosed embodiments include a plurality of features that are described in concert and that might cooperatively provide a collection of benefits. The present invention is not limited to only those embodiments that include all of these features or that provide all of the stated benefits, except to the extent otherwise expressly set forth in the issued claims. Any reference to claim elements in the singular, for example, using the articles “a,” “an,” “the” or “said,” is not to be construed as limiting the element to the singular. Any reference to claim elements as “at least one of X, Y and Z” is meant to include any one of X, Y or Z individually, and any combination of X, Y and Z, for example, X, Y, Z; X, Y; X, Z; and Y, Z. 

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
 1. A riding vehicle comprising: a frame coupled to a riding platform adapted to support a user; a plurality of wheels coupled to the frame comprising at least two opposing traction wheels; a mower deck and a plurality of cutting blades disposed within a cutting space of the mower deck, the mower deck having a discharge chute for expelling cuttings from the mower deck; a blower assembly supported by the frame and having an air inlet and an air outlet, the blower assembly configured to generate a stream of air from the air inlet to the air outlet, the air outlet being separate from the discharge chute of the mower deck, the stream of air enabling movement of debris on a surface from a first location to a second location; and a power source coupled to the frame, the power source operatively coupled to the cutting blades and the blower assembly.
 2. The riding vehicle of claim 1 wherein the power source is configured to selectively drive the cutting blades disposed on the mower deck.
 3. The riding vehicle of claim 1 wherein the cutting blades are operatively coupled to the power source via a clutch, and wherein the power source includes a power takeoff directly coupled to the blower assembly and the clutch.
 4. The riding vehicle of claim 3 wherein selective engagement of the clutch enables the power source to selectively drive the cutting blades.
 5. The riding vehicle of claim 3 wherein the power takeoff is disposed vertically.
 6. The riding vehicle of claim 1 wherein: the blower assembly includes an impeller and a blower housing that houses the impeller; the blower housing defines the air inlet and the air outlet; the blower housing defines a mower deck air supply outlet separate from the air outlet; the mower deck includes a mower deck air inlet in communication with the cutting space; and the mower deck air supply outlet of the blower housing is operably coupled to the mower deck air inlet of the mower deck to direct a stream of air from the air inlet to the cutting space of the mower deck
 7. The riding vehicle of claim 1 wherein the blower assembly includes an impeller and a blower housing that houses the impeller, wherein a rotational axis of the impeller is substantially the same as a rotational axis of the plurality of cutting blades of the mower deck.
 8. The riding vehicle of claim 7 wherein the blower assembly is disposed above the mower deck in a stacked configuration.
 9. The riding vehicle of claim 1 wherein the power source is disposed above the blower assembly, and wherein the blower assembly is disposed above the mower deck.
 10. The riding vehicle of claim 6 wherein the plurality of cutting blades includes three cutting blades arranged in a reverse delta configuration with a right blade and a left blade disposed forward of a middle blade, wherein the mower deck is constructed to direct air received by the mower deck air inlet to an area between the left blade and the middle blade, whereby air directed to the area facilitates discharge of cuttings produced by the middle blade.
 11. A riding vehicle comprising: a frame coupled to a riding platform adapted to support a user; a plurality of wheels coupled to the frame comprising at least two opposing traction wheels; a mower deck and at least three cutting blades disposed within a cutting space of the mower deck, the mower deck having a discharge chute for expelling cuttings from the mower deck; a blower assembly supported by the frame and having an air inlet and an air outlet, the blower assembly configured to generate a stream of air from the air inlet to the air outlet, the blower assembly includes a blower housing and an impeller operable to rotate to generate the stream of air; a power source coupled to the frame, the power source operatively coupled with the at least three cutting blades and the blower assembly; and wherein a rotational axis of the impeller is substantially the same as a rotational axis of the cutting blades of the mower deck.
 12. The riding vehicle of claim 11 wherein the mower deck includes a mower deck inlet in communication with the cutting space, and wherein the air outlet of the blower assembly is operably coupled to the mower deck inlet to direct the stream of air to the cutting space.
 13. The riding vehicle of claim 11 wherein the at least three cutting blades include a right cutting blade, a middle cutting blade, and a left cutting blade arranged, with respect to a forward driving direction of the riding vehicle, in a reverse delta configuration such that the right cutting blade and the left cutting blade are disposed forward of the middle cutting blade.
 14. The riding vehicle of claim 11 wherein the impeller is selectively operable to generate the stream of air, and wherein the at least three cutting blades of the mower deck are selectively operable to rotate for cutting action.
 15. The riding vehicle of claim 11 wherein the impeller and the at least three cutting blades of the mower deck are operably and respectively coupled to the power source via first and second clutches.
 16. The riding vehicle of claim 11 wherein: the blower housing defines the air inlet and the air outlet; and the blower housing defines a debris blower air supply outlet separate from the air outlet.
 17. The riding vehicle of claim 16 wherein: the debris blower air supply outlet of the blower housing is a right nozzle configured to direct the stream of air toward a right side of the riding vehicle; the blower housing includes a left nozzle and a forward facing nozzle each in operable communication with the air inlet; the left nozzle is configured to direct a stream of air toward a left side of the riding vehicle; and the forward facing nozzle is configured to direct the stream of air toward a front of the riding vehicle.
 18. The riding vehicle of claim 17 wherein the blower assembly includes a control assembly for selectively controlling supply of air from the air inlet to the right nozzle, the left nozzle and the forward facing nozzle.
 19. The riding vehicle of claim 18 wherein the control assembly includes a plurality of dampers respectively associated with the right nozzle, the left nozzle and the forward facing nozzle, each of the plurality of dampers being user controllable to selectively control supply of air to the right nozzle, the left nozzle and the forward facing nozzle.
 20. A method of operating a riding vehicle for maintenance of a lawn, the method comprising: providing a power source with a power takeoff to supply power to at least one of an impeller of a blower assembly, cutting blades of a mower deck, and at least two traction wheels; driving, with the power takeoff, the cutting blades of the mower deck to rotate with substantially vertical rotational axes in order to cut areas of the lawn; driving, with the power takeoff, the impeller of the blower assembly to rotate with a rotational axis that is non-normal relative to the substantially vertical rotational axes of the cutting blades; directing a stream of air generated by the impeller to flow an air outlet nozzle to a surface area to move debris from one location to another location; and discharging cuttings generated by the cutting blades through a discharge chute of the mower deck, wherein the discharge chute is separate from the air outlet nozzle. 